标签:pre sele desc 数值 执行 work 连续 order by esc
编写一个 SQL 查询来实现分数排名。如果两个分数相同,则两个分数排名(Rank)相同。请注意,平分后的下一个名次应该是下一个连续的整数值。换句话说,名次之间不应该有“间隔”。
+----+-------+ | Id | Score | +----+-------+ | 1 | 3.50 | | 2 | 3.65 | | 3 | 4.00 | | 4 | 3.85 | | 5 | 4.00 | | 6 | 3.65 | +----+-------+
例如,根据上述给定的 Scores
表,你的查询应该返回(按分数从高到低排列):
+-------+------+ | Score | Rank | +-------+------+ | 4.00 | 1 | | 4.00 | 1 | | 3.85 | 2 | | 3.65 | 3 | | 3.65 | 3 | | 3.50 | 4 | +-------+------+
SELECT f.answer_score, (SELECT COUNT(DISTINCT f1.answer_score) from f_student_homework_answer f1 where f.answer_score <= f1.answer_score ) rank from f_student_homework_answer f ORDER BY f.answer_score DESC -- 执行顺序 -- ?FROM -- ?WHERE -- ?GROUP BY -- ?HAVING -- ?SELECT -- ?DISTINCT -- ?UNION -- ?ORDER BY
标签:pre sele desc 数值 执行 work 连续 order by esc
原文地址:https://www.cnblogs.com/zzt-lovelinlin/p/9409350.html